Electrolytes: Essential or Overrated? (3 of 4)

Electrolytes Can Matter… Under Certain Conditions

To be clear, we aren’t suggesting that electrolyte supplementation is useless. There are circumstances where adding electrolytes are both beneficial and, indeed, entirely essential for maintaining performance.

• Heat. When exercising in hot and humid conditions, your sweat rates increase dramatically, which in turn depletes both water and sodium. For sweating that is prolonged and substantial, replacing some of that sodium will keep you hydrated and help support athletic performance.
• Long-duration activities. Endurance events such as marathons, triathlons, long cycling rides, or ultra-distance races often take several hours to complete. Under these circumstances, you’re going to be losing enough fluids and sodium to warrant electrolyte supplementation.
• Salty sweaters. Some individuals are prone to losing more-than-average amounts of sweat. If you’re noticing white salt stains on your clothing, hats, or athletic gear after exercise, this is a strong indicator that you belong to this category. In such cases, consuming drinks that are rich in electrolytes can help keep you hydrated.

Electrolyte/Cramping Link: Fact or Fiction?

One argument in support of electrolyte supplementation is the commonly held belief that they prevent muscle cramps. For years athletes have been told electrolyte depletion is the main culprit of cramping, especially low levels of sodium. However, this is generally a myth. Although severe electrolyte imbalances can contribute to cramping in certain circumstances, it wouldn’t explain why athletes suffer from cramping even when they are sufficiently hydrated with electrolyte-infused drinks. Instead, most research supports the idea that cramping is actually the result of neuromuscular fatigue caused by overworked muscles.